1876 20C PR65 PCGS. Each side displays relatively deep gray,
blue, and rose toning, but here is the surprising part: the depth
of color has little effect on the mirrored fields. There must be
some good reason twenty cent proofs are so deeply mirrored.
Basining, perhaps? In any case, reflectivity is not a problem. The
strike is complete in all areas also, including the top of the
obverse and upper portions of the eagle's wings. No obvious
defects. Population: 23 in 65, 10 finer (9/12).(Registry
values: N4719) (NGC ID# 27H3, PCGS# 5304)